Helmet



FIG. 1 is a front view of a helmet showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front perspective view thereof;

FIG. 8 is an enlargement of the encircled portion 8 in FIG. 1;

FIG. 9 is an enlargement of the encircled portion 9 in FIG. 1;

FIG. 10 is an enlargement of the encircled portion 10 in FIG. 1;

FIG. 11 is an enlargement of the encircled portion 11 in FIG. 2;

FIG. 12 is an enlargement of the encircled portion 12 in FIG. 3;

FIG. 13 is an enlargement of the encircled portion 13 in FIG. 3;

FIG. 14 is an enlargement of the encircled portion 14 in FIG. 6; and,

FIG. 15 is an enlargement of the encircled portion 15 in FIG. 7.

The broken lines in the figures depict portions of the helmet which form no part of the claimed design.

The dot-dot-dash broken lines encircling portions of the claimed design that are shown in enlargements form no part of the claimed design. 

CLAIM I claim the ornamental design for a helmet, as shown and described. 